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Catalytic burner, catalytic burning pyrolysis kiln and catalytic burning pyrolysis method

A catalytic burner and catalytic combustion technology are applied in the fields of catalytic combustion pyrolysis furnaces, catalytic combustion pyrolysis, and catalytic burners, which can solve the problems of large pollutant emissions, low combustion efficiency and low heat loss, and reduce emissions and improve Efficiency of fuel utilization and the effect of realizing a large number of continuous production operations

Pending Publication Date: 2018-04-20
BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a new type of catalytic burner, a catalytic combustion pyrolysis kiln containing the new type of catalytic burner, and a catalytic combustion pyrolysis furnace using the catalytic combustion to solve the problems of low combustion efficiency, serious heat loss, and large pollutant discharge of ordinary flames. Pyrolysis Furnace Catalytic Combustion Pyrolysis Method for Organic Solid Waste

Method used

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  • Catalytic burner, catalytic burning pyrolysis kiln and catalytic burning pyrolysis method
  • Catalytic burner, catalytic burning pyrolysis kiln and catalytic burning pyrolysis method
  • Catalytic burner, catalytic burning pyrolysis kiln and catalytic burning pyrolysis method

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Embodiment 1

[0067] Taking domestic waste as an example, the domestic waste with a moisture content of 50% is pretreated to remove large bricks, iron blocks, etc., and then the inorganic slag is removed through the drum screen, and then sent to the discharge pit after magnetic separation and crushing Perform heap filtration and crush the garbage to 50mm-100mm. The moisture content of the heap-filtered garbage is 30%, and it is sent to the rotary bed 20 via a shaftless screw. In the preheating zone, the temperature of the furnace 201 is 500°C, and the material temperature is 350°C. At this time, domestic garbage is mainly dried. The temperature of pyrolysis zone 1 and pyrolysis zone 2 is 850°C, and the material temperature is 750°C. At this time, domestic waste is subjected to anaerobic pyrolysis, and a large amount of pyrolysis gas is produced. The temperature in the discharge area is below 600°C. At this time, the domestic waste is basically pyrolyzed. Lowering the temperature is conduci...

Embodiment 2

[0073] In another specific real-time example, the moisture content of household waste is 56%, and it is heap-filtered to a moisture content of 28%, and the particle size of the waste is crushed to 500mm, and then sent to the rotary bed. The furnace wall temperature in the first pyrolysis zone and the second pyrolysis zone is 850°C, the temperature of the material is 750°C, the composition of the pyrolysis gas is shown in Table 1, and the calorific value is 4000kcal / m 3 about.

[0074] Table 1 Volume fraction of pyrolysis gas components

[0075]

[0076] After the catalytic burner is started, the pyrolysis gas is fed, and the air-fuel ratio is 1.1:1. After the combustion is stable, the flameless combustion surface temperature of the catalytic burner in the pyrolysis zone 1 and pyrolysis zone 2 is 950°C, and the flue gas temperature of the catalytic combustion is 900°C. The honeycomb ceramic body (catalyst carrier 1021) dipped in the catalyst has a service life of more than...

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Abstract

The invention relates to a catalytic burner, a catalytic burning pyrolysis kiln and a catalytic burning pyrolysis method. The catalytic burner comprises a burning cavity, a burning component and a mixed gas pipeline; the mixed gas pipeline communicates with the burning cavity and is used for conveying flammable mixed gas into the burning cavity; the burning component is located in the burning cavity and contains a catalyst carrier dipped in a catalyst; and burning of the flammable mixed gas can be promoted by the aid of the catalyst. Pyrolysis treatment is performed on organic solid waste by the catalytic burning pyrolysis kiln comprising the catalytic burner, produced pyrolysis gas is used as fuel for the catalytic burner after being separated and is subjected to oxygen-enriched burning in the catalytic burner, heat is transferred to the hearth wall of the pyrolysis kiln in a radiation manner and then is transferred to a material in the radiation manner, and the material is decomposedinto clean energy such as pyrolysis oil and gas, pyrolysis carbon and the like in an anaerobic environment. The fuel utilization efficiency is improved, discharging of pollutants such as nitride andthe like is reduced, and continuous mass production can be realized.

Description

technical field [0001] The invention generally relates to the technical field of organic solid waste treatment, in particular to a catalytic burner, a catalytic combustion pyrolysis furnace and a catalytic combustion pyrolysis method. Background technique [0002] At present, the treatment methods of organic solid waste are mainly landfill and incineration. Among them, landfill covers a large area, and the leachate produced contains a large number of pathogenic bacteria and heavy metals, causing serious pollution to groundwater. The secondary pollution produced by incineration is mainly dioxin and fly ash. Dioxin is a highly toxic gas that can accumulate in the human body, causing cancer and a serious threat to human health; fly ash is a hazardous waste that contains a large amount of heavy metals. Improper disposal will seriously damage the natural environment. [0003] Pyrolysis technology is a new technology that burns and pyrolyzes organic solid waste in an anaerobic e...

Claims

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Application Information

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IPC IPC(8): F23G5/027F23D14/18
CPCF23D14/18F23G5/027Y02E20/34
Inventor 房凯巴玉鑫王惠惠牛明杰吴道洪
Owner BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD